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Fix shaders

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This commit is contained in:
Milan Nikolic 2017-11-14 13:24:06 +01:00
parent 4ecc34b892
commit 645c0ab713
14 changed files with 518 additions and 40 deletions
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26
examples/shaders/postprocessing/glsl330/base.vs
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@ -1,26 +0,0 @@
#version 330
// Input vertex attributes
in vec3 vertexPosition;
in vec2 vertexTexCoord;
in vec3 vertexNormal;
in vec4 vertexColor;
// Input uniform values
uniform mat4 mvp;
// Output vertex attributes (to fragment shader)
out vec2 fragTexCoord;
out vec4 fragColor;
// NOTE: Add here your custom variables
void main()
{
// Send vertex attributes to fragment shader
fragTexCoord = vertexTexCoord;
fragColor = vertexColor;
// Calculate final vertex position
gl_Position = mvp*vec4(vertexPosition, 1.0);
}

35
examples/shaders/postprocessing/glsl330/blur.fs Normal file
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@ -0,0 +1,35 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
// NOTE: Render size values must be passed from code
const float renderWidth = 800;
const float renderHeight = 450;
float offset[3] = float[](0.0, 1.3846153846, 3.2307692308);
float weight[3] = float[](0.2270270270, 0.3162162162, 0.0702702703);
void main()
{
// Texel color fetching from texture sampler
vec3 texelColor = texture(texture0, fragTexCoord).rgb*weight[0];
for (int i = 1; i < 3; i++)
{
texelColor += texture(texture0, fragTexCoord + vec2(offset[i])/renderWidth, 0.0).rgb*weight[i];
texelColor += texture(texture0, fragTexCoord - vec2(offset[i])/renderWidth, 0.0).rgb*weight[i];
}
finalColor = vec4(texelColor, 1.0);
}

48
examples/shaders/postprocessing/glsl330/cross_hatching.fs Normal file
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@ -0,0 +1,48 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
float hatchOffsetY = 5.0;
float lumThreshold01 = 0.9;
float lumThreshold02 = 0.7;
float lumThreshold03 = 0.5;
float lumThreshold04 = 0.3;
void main()
{
vec3 tc = vec3(1.0, 1.0, 1.0);
float lum = length(texture(texture0, fragTexCoord).rgb);
if (lum < lumThreshold01)
{
if (mod(gl_FragCoord.x + gl_FragCoord.y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
}
if (lum < lumThreshold02)
{
if (mod(gl_FragCoord.x - gl_FragCoord.y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
}
if (lum < lumThreshold03)
{
if (mod(gl_FragCoord.x + gl_FragCoord.y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
}
if (lum < lumThreshold04)
{
if (mod(gl_FragCoord.x - gl_FragCoord.y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
}
finalColor = vec4(tc, 1.0);
}

59
examples/shaders/postprocessing/glsl330/cross_stitching.fs Normal file
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@ -0,0 +1,59 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
// NOTE: Render size values must be passed from code
const float renderWidth = 800.0;
const float renderHeight = 450.0;
float stitchingSize = 6.0;
uniform int invert = 0;
vec4 PostFX(sampler2D tex, vec2 uv)
{
vec4 c = vec4(0.0);
float size = stitchingSize;
vec2 cPos = uv * vec2(renderWidth, renderHeight);
vec2 tlPos = floor(cPos / vec2(size, size));
tlPos *= size;
int remX = int(mod(cPos.x, size));
int remY = int(mod(cPos.y, size));
if (remX == 0 && remY == 0) tlPos = cPos;
vec2 blPos = tlPos;
blPos.y += (size - 1.0);
if ((remX == remY) || (((int(cPos.x) - int(blPos.x)) == (int(blPos.y) - int(cPos.y)))))
{
if (invert == 1) c = vec4(0.2, 0.15, 0.05, 1.0);
else c = texture(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
}
else
{
if (invert == 1) c = texture(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
else c = vec4(0.0, 0.0, 0.0, 1.0);
}
return c;
}
void main()
{
vec3 tc = PostFX(texture0, fragTexCoord).rgb;
finalColor = vec4(tc, 1.0);
}

34
examples/shaders/postprocessing/glsl330/dream_vision.fs Normal file
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@ -0,0 +1,34 @@
#version 330
in vec2 fragTexCoord;
out vec4 fragColor;
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// NOTE: Add here your custom variables
void main()
{
vec4 color = texture(texture0, fragTexCoord);
color += texture(texture0, fragTexCoord + 0.001);
color += texture(texture0, fragTexCoord + 0.003);
color += texture(texture0, fragTexCoord + 0.005);
color += texture(texture0, fragTexCoord + 0.007);
color += texture(texture0, fragTexCoord + 0.009);
color += texture(texture0, fragTexCoord + 0.011);
color += texture(texture0, fragTexCoord - 0.001);
color += texture(texture0, fragTexCoord - 0.003);
color += texture(texture0, fragTexCoord - 0.005);
color += texture(texture0, fragTexCoord - 0.007);
color += texture(texture0, fragTexCoord - 0.009);
color += texture(texture0, fragTexCoord - 0.011);
color.rgb = vec3((color.r + color.g + color.b)/3.0);
color = color/9.5;
fragColor = color;
}

40
examples/shaders/postprocessing/glsl330/fisheye.fs Normal file
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@ -0,0 +1,40 @@
#version 330
in vec2 fragTexCoord;
out vec4 fragColor;
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// NOTE: Add here your custom variables
const float PI = 3.1415926535;
void main()
{
float aperture = 178.0;
float apertureHalf = 0.5 * aperture * (PI / 180.0);
float maxFactor = sin(apertureHalf);
vec2 uv = vec2(0);
vec2 xy = 2.0 * fragTexCoord.xy - 1.0;
float d = length(xy);
if (d < (2.0 - maxFactor))
{
d = length(xy * maxFactor);
float z = sqrt(1.0 - d * d);
float r = atan(d, z) / PI;
float phi = atan(xy.y, xy.x);
uv.x = r * cos(phi) + 0.5;
uv.y = r * sin(phi) + 0.5;
}
else
{
uv = fragTexCoord.xy;
}
fragColor = texture(texture0, uv);
}

26
examples/shaders/postprocessing/glsl330/grayscale.fs Normal file
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@ -0,0 +1,26 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
void main()
{
// Texel color fetching from texture sampler
vec4 texelColor = texture(texture0, fragTexCoord)*colDiffuse*fragColor;
// Convert texel color to grayscale using NTSC conversion weights
float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
// Calculate final fragment color
finalColor = vec4(gray, gray, gray, texelColor.a);
}

33
examples/shaders/postprocessing/glsl330/pixelizer.fs Normal file
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@ -0,0 +1,33 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
// NOTE: Render size values must be passed from code
const float renderWidth = 800;
const float renderHeight = 450;
uniform float pixelWidth = 5.0;
uniform float pixelHeight = 5.0;
void main()
{
float dx = pixelWidth*(1.0/renderWidth);
float dy = pixelHeight*(1.0/renderHeight);
vec2 coord = vec2(dx*floor(fragTexCoord.x/dx), dy*floor(fragTexCoord.y/dy));
vec3 tc = texture(texture0, coord).rgb;
finalColor = vec4(tc, 1.0);
}

31
examples/shaders/postprocessing/glsl330/posterization.fs Normal file
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@ -0,0 +1,31 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
float gamma = 0.6;
float numColors = 8.0;
void main()
{
// Texel color fetching from texture sampler
vec3 texelColor = texture(texture0, fragTexCoord.xy).rgb;
texelColor = pow(texelColor, vec3(gamma, gamma, gamma));
texelColor = texelColor*numColors;
texelColor = floor(texelColor);
texelColor = texelColor/numColors;
texelColor = pow(texelColor, vec3(1.0/gamma));
finalColor = vec4(texelColor, 1.0);
}

32
examples/shaders/postprocessing/glsl330/predator.fs Normal file
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@ -0,0 +1,32 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
void main()
{
// Texel color fetching from texture sampler
vec3 texelColor = texture(texture0, fragTexCoord).rgb;
vec3 colors[3];
colors[0] = vec3(0.0, 0.0, 1.0);
colors[1] = vec3(1.0, 1.0, 0.0);
colors[2] = vec3(1.0, 0.0, 0.0);
float lum = (texelColor.r + texelColor.g + texelColor.b)/3.0;
int ix = (lum < 0.5)? 0:1;
vec3 tc = mix(colors[ix], colors[ix + 1], (lum - float(ix)*0.5)/0.5);
finalColor = vec4(tc, 1.0);
}

49
examples/shaders/postprocessing/glsl330/scanlines.fs Normal file
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@ -0,0 +1,49 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
// NOTE: Render size values must be passed from code
const float renderWidth = 800;
const float renderHeight = 450;
float offset = 0.0;
uniform float time;
void main()
{
float frequency = renderHeight/3.0;
/*
// Scanlines method 1
float tval = 0; //time
vec2 uv = 0.5 + (fragTexCoord - 0.5)*(0.9 + 0.01*sin(0.5*tval));
vec4 color = texture(texture0, fragTexCoord);
color = clamp(color*0.5 + 0.5*color*color*1.2, 0.0, 1.0);
color *= 0.5 + 0.5*16.0*uv.x*uv.y*(1.0 - uv.x)*(1.0 - uv.y);
color *= vec4(0.8, 1.0, 0.7, 1);
color *= 0.9 + 0.1*sin(10.0*tval + uv.y*1000.0);
color *= 0.97 + 0.03*sin(110.0*tval);
fragColor = color;
*/
// Scanlines method 2
float globalPos = (fragTexCoord.y + offset) * frequency;
float wavePos = cos((fract(globalPos) - 0.5)*3.14);
// Texel color fetching from texture sampler
vec4 texelColor = texture(texture0, fragTexCoord);
finalColor = mix(vec4(0.0, 0.3, 0.0, 0.0), texelColor, wavePos);
}

41
examples/shaders/postprocessing/glsl330/sobel.fs Normal file
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@ -0,0 +1,41 @@
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
uniform vec2 resolution = vec2(800, 450);
void main()
{
float x = 1.0/resolution.x;
float y = 1.0/resolution.y;
vec4 horizEdge = vec4(0.0);
horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y ))*2.0;
horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y ))*2.0;
horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
vec4 vertEdge = vec4(0.0);
vertEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
vertEdge -= texture2D(texture0, vec2(fragTexCoord.x , fragTexCoord.y - y))*2.0;
vertEdge -= texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
vertEdge += texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
vertEdge += texture2D(texture0, vec2(fragTexCoord.x , fragTexCoord.y + y))*2.0;
vertEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
vec3 edge = sqrt((horizEdge.rgb*horizEdge.rgb) + (vertEdge.rgb*vertEdge.rgb));
finalColor = vec4(edge, texture2D(texture0, fragTexCoord).a);
}

90
examples/shaders/postprocessing/main.go
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@ -4,6 +4,38 @@ import (
"github.com/gen2brain/raylib-go/raylib"
)
const MaxPostproShaders = 12
const (
FxGrayscale = iota
FxPosterization
FxDreamVision
FxPixelizer
FxCrossHatching
FxCrossStitching
FxPredatorView
FxScanlines
FxFisheye
FxSobel
FxBloom
FxBlur
)
var postproShaderText = []string{
"GRAYSCALE",
"POSTERIZATION",
"DREAM_VISION",
"PIXELIZER",
"CROSS_HATCHING",
"CROSS_STITCHING",
"PREDATOR_VIEW",
"SCANLINES",
"FISHEYE",
"SOBEL",
"BLOOM",
"BLUR",
}
func main() {
screenWidth := int32(800)
screenHeight := int32(450)
@ -18,25 +50,52 @@ func main() {
camera.Up = raylib.NewVector3(0.0, 1.0, 0.0)
camera.Fovy = 45.0
dwarf := raylib.LoadModel("dwarf.obj") // Load OBJ model
texture := raylib.LoadTexture("dwarf_diffuse.png") // Load model texture
dwarf := raylib.LoadModel("dwarf.obj") // Load OBJ model
texture := raylib.LoadTexture("dwarf_diffuse.png") // Load model texture
dwarf.Material.Maps[raylib.MapDiffuse].Texture = texture // Set dwarf model diffuse texture
position := raylib.NewVector3(0.0, 0.0, 0.0) // Set model position
shader := raylib.LoadShader("glsl330/base.vs", "glsl330/bloom.fs") // Load postpro shader
// Load all postpro shaders
// NOTE 1: All postpro shader use the base vertex shader (DEFAULT_VERTEX_SHADER)
shaders := make([]raylib.Shader, MaxPostproShaders)
shaders[FxGrayscale] = raylib.LoadShader("", "glsl330/grayscale.fs")
shaders[FxPosterization] = raylib.LoadShader("", "glsl330/posterization.fs")
shaders[FxDreamVision] = raylib.LoadShader("", "glsl330/dream_vision.fs")
shaders[FxPixelizer] = raylib.LoadShader("", "glsl330/pixelizer.fs")
shaders[FxCrossHatching] = raylib.LoadShader("", "glsl330/cross_hatching.fs")
shaders[FxCrossStitching] = raylib.LoadShader("", "glsl330/cross_stitching.fs")
shaders[FxPredatorView] = raylib.LoadShader("", "glsl330/predator.fs")
shaders[FxScanlines] = raylib.LoadShader("", "glsl330/scanlines.fs")
shaders[FxFisheye] = raylib.LoadShader("", "glsl330/fisheye.fs")
shaders[FxSobel] = raylib.LoadShader("", "glsl330/sobel.fs")
shaders[FxBlur] = raylib.LoadShader("", "glsl330/blur.fs")
shaders[FxBloom] = raylib.LoadShader("", "glsl330/bloom.fs")
currentShader := FxGrayscale
// Create a RenderTexture2D to be used for render to texture
target := raylib.LoadRenderTexture(screenWidth, screenHeight)
raylib.SetCameraMode(camera, raylib.CameraOrbital) // Set free camera mode
//raylib.SetTargetFPS(60)
raylib.SetTargetFPS(60)
for !raylib.WindowShouldClose() {
raylib.UpdateCamera(&camera) // Update camera
if raylib.IsKeyPressed(raylib.KeyRight) {
currentShader++
} else if raylib.IsKeyPressed(raylib.KeyLeft) {
currentShader--
}
if currentShader >= MaxPostproShaders {
currentShader = 0
} else if currentShader < 0 {
currentShader = MaxPostproShaders - 1
}
raylib.BeginDrawing()
raylib.ClearBackground(raylib.RayWhite)
@ -51,25 +110,34 @@ func main() {
raylib.End3dMode()
raylib.DrawText("HELLO POSTPROCESSING!", 70, 190, 50, raylib.Red)
raylib.EndTextureMode() // End drawing to texture (now we have a texture available for next passes)
raylib.BeginShaderMode(shader)
// Render previously generated texture using selected postpro shader
raylib.BeginShaderMode(shaders[currentShader])
// NOTE: Render texture must be y-flipped due to default OpenGL coordinates (left-bottom)
raylib.DrawTextureRec(target.Texture, raylib.NewRectangle(0, 0, target.Texture.Width, -target.Texture.Height), raylib.NewVector2(0, 0), raylib.White)
raylib.EndShaderMode()
raylib.DrawText("(c) Dwarf 3D model by David Moreno", screenWidth-200, screenHeight-20, 10, raylib.Gray)
raylib.DrawRectangle(0, 9, 580, 30, raylib.Fade(raylib.LightGray, 0.7))
raylib.DrawFPS(10, 10)
raylib.DrawText("(c) Dwarf 3D model by David Moreno", screenWidth-200, screenHeight-20, 10, raylib.DarkGray)
raylib.DrawText("CURRENT POSTPRO SHADER:", 10, 15, 20, raylib.Black)
raylib.DrawText(postproShaderText[currentShader], 330, 15, 20, raylib.Red)
raylib.DrawText("< >", 540, 10, 30, raylib.DarkBlue)
raylib.DrawFPS(700, 15)
raylib.EndDrawing()
}
raylib.UnloadShader(shader) // Unload shader
// Unload all postpro shaders
for i := 0; i < MaxPostproShaders; i++ {
raylib.UnloadShader(shaders[i])
}
raylib.UnloadTexture(texture) // Unload texture
raylib.UnloadModel(dwarf) // Unload model
raylib.UnloadRenderTexture(target) // Unload render texture